DIGESTION WORKSHEET 1. The six food groups are water, carbohydrates, fats, proteins, ____________ and _____________ 2. The five stages of digestion are: 3. Chemical catalysts found in the digestive process are called: 4. What enzyme is found in saliva? 5. What word describes the fragmenting of food by the teeth? 6. What is another name for the throat? 7. What valve keeps food from going to the lungs? 8. What is the name of the wave-like process that moves food down the esophagus? 9. What acid is present in the stomach? 10. What enzyme do gastric juices contain? 11. What food does it work on? 12. What is the semi-liquid food that leaves the stomach? 13. Digested food passes through the villi into tiny blood vessels called ____________. 14. What gland is in the back of the stomach? 15. What liquid is produced by the liver? 16. In what structure is liver bile stored until needed? 17. What are the three parts of the small intestine? 18. What is the main function of the large intestines? 19. What is the lower end of the large intestine called? 20. Waste material leaves the body from the large intestine through an opening called the: